CN108426175A - A kind of long distance wireless routine for pipe-line transportation system leakage or gas leakage - Google Patents
A kind of long distance wireless routine for pipe-line transportation system leakage or gas leakage Download PDFInfo
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- CN108426175A CN108426175A CN201711037589.2A CN201711037589A CN108426175A CN 108426175 A CN108426175 A CN 108426175A CN 201711037589 A CN201711037589 A CN 201711037589A CN 108426175 A CN108426175 A CN 108426175A
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- leakage
- long distance
- transportation system
- distance wireless
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of long distance wireless routines for pipe-line transportation system leakage or gas leakage, including the node monitoring device being sleeved on plastic cement pipeline, the controller, the host computer with controller communication connection that are electrically connected with the signal receiver of node monitoring device communication connection and signal receiver；The node monitoring device includes the signal picker that retaining collar and retaining collar are connected as one.The present invention can not only effectively be handled by the signal acquired to detecting head, improve device sensitivity, and it can be interfered by noise in detection by preventing detecting head in all its bearings, ensure monitoring precision, and the gas leakage situation of the water leakage situation and air duct of water pipeline is automatically monitored, it saves human resources and also avoids human error.
Description
Technical field
The present invention relates to Monitoring Pinpelines fields, are a kind of for the remote of pipe-line transportation system leakage or gas leakage specifically
Journey wireless automatic monitoring device.
Background technology
With world population and economic fast development, because conveyance conduit is damaged and the reason of leak caused by water resource
Or the waste of gas resource has become one of major constraints factor of socio-economic development.China's city tap-water feed system
It is lost caused by pipe leakage every year quite surprising, had both wasted valuable water resource and also resulted in huge economic loss；
And natural gas either other combustion gas because piping failure and caused by leakage not only result in resource waste and also be even more have
It is likely to result in safety accident.How leakage point is quickly searched, effective leak hunting method is provided for pipeline engineering technical staff
And device, it is always to be engaged in the scientific and technical personnel that water supply line works and the important goal that scholar endeavours to study.
Nowadays most common pipeline leakage detection method is audition method, refers to and listens attentively to leak or gas leakage with certain acoustic tool
Sound, the position of leak or gas leakage is judged according to the size of leak sound or gas leakage sound and sound quality feature, from simple machinery
For formula missed stick to all kinds of audition leak detectors, this method should call the method for shaking in essence.Development is quite rapid at present, is domestic
The method the most universal and effective of outer application, however, this detection method is there is also certain defect, when leakage rate is smaller or
Farther out, leakage signal is generally all fainter for detecting distance, and detecting head is caused good can not to collect vibration signal, and
Detecting head can be interfered while acquiring signal by the noise from various aspects, such as circuit noise, detection ambient noise
Deng to influence our monitoring precisions to pipeline.
Invention content
The purpose of the present invention is to provide a kind of long distance wireless for pipe-line transportation system leakage or gas leakage to monitor automatically
Device, the signal that can not only be acquired to detecting head are effectively handled, and improve device sensitivity, and can prevent detecting head
It is interfered by circuit noise and detection ambient noise in detection, ensures monitoring precision.
The present invention is achieved through the following technical solutions：A kind of long distance wireless for pipe-line transportation system leakage or gas leakage from
Dynamic monitor, including the node monitoring device being sleeved on plastic cement pipeline, the signal reception communicated to connect with node monitoring device
Device, the controller being electrically connected with signal receiver, the host computer with controller communication connection；The node monitoring device includes
Retaining collar, the signal picker being connected as one with retaining collar；The signal picker include piezoelectric acceleration sensor,
The microcontroller being connect with piezoelectric acceleration sensor, the signal projector, indicating module, the power supply that are electrically connected respectively with microcontroller
Module.The transmission data by way of wireless telecommunications, simplifies line arrangement to a certain extent, keeps maintenance more convenient, prison
It surveys more flexible.By system full-automation, not only eliminates and ask professional testing staff to detect whether leak or gas leakage, and
And detection is rapid, accurate, avoids human error, while eliminating the process of periodic detection, largely save manpower,
Time cost.
In order to preferably realize the present invention, further, the piezoelectric acceleration sensor is mainly by sensor probe, preceding
Set amplifying circuit, filter, gain amplifying circuit and signaling conversion circuit are constituted, and sensor probe, pre-amplification circuit,
Filter, gain amplifying circuit, signaling conversion circuit are sequentially connected.It, not only can be with by the rational design of signal conditioning circuit
Lower circuit power consumption, and be directed to Monitoring Pinpelines, enhance detection sensitivity, inhibit interference signal, it is accurate to further increase detection
Exactness.
In order to preferably realize the present invention, further, the pre-amplification circuit is second amplifying circuit, wherein inputting
Grade is field-effect tube, level-one is operational amplifier, and it is monopole type device that input stage, which uses technotron 2SK30A, field-effect tube,
Part, noise is relatively low, and amplifier input impedance is up to tens of million, and convenient for coordinating with sensor, pre-amplification circuit uses two level
Amplification, improves the gain of preamplifier, the sensitivity of amplifier is made to further increase, its output voltage amplitude is made to conform to
It asks, reduces the influence to performance of filter.
In order to preferably realize the present invention, further, the filter is mainly by bandwidth-limited circuit and in-phase proportion
Amplifying circuit composition, and bandwidth-limited circuit is connected in series by low-pass filter circuit and high-pass filtering circuit.Using voltage-controlled electricity
Source type bandpass filter has the characteristics that not having to inductance, small, light-weight, can be only with an operational amplifier, to reduce
Power consumption and noise are made of the amplifying circuit of two section RC filter circuits and in-phase proportion, and feature is input impedance height, output resistance
It is anti-low to realize the gain of passband voltage.
In order to preferably realize the present invention, further, the retaining collar is split ring and opening is provided with and is used for
It is inserted into the protrusion of screw.By the way that the flexibility of split ring is arranged, fixation can be adjusted according to the different outer diameters of plastic cement pipeline
The internal diameter of lantern ring avoids nodal test device from being moved on pipeline to make retaining collar be bonded fixation completely with plastic cement pipeline
And change monitoring distance, and sensor can preferably acquire vibration signal.
In order to preferably realize the present invention, further, sound proofing enclosure is additionally provided with outside the sensor probe.By setting
Sound proofing enclosure is set, barrier sensor probe receives the noise jamming of external environment, to improve monitoring accuracy.
In order to preferably realize the present invention, further, the power module is Portable secondary battery, can be ni-Cd
The recyclable charge-discharge battery such as battery, Ni-MH battery, lithium ion battery and lithium polymer battery, not only compact is convenient for peace
Dress, and energy conservation and environmental protection, cost are relatively low.
In order to preferably realize the present invention, further, the indicating module is LED red indicating lights, in plastic cement
Pipeline occurs to carry out leakage instruction at the node of leak segment when leak, to prompt the position for the treatment of people leakage point, from
And treatment people maintenance is facilitated to handle.
Further include the solenoid valve being connected with plastic cement pipeline further, and solenoid valve to preferably realize the present invention
It is electrically connected with controller.By the way that solenoid valve is arranged between plastic cement pipeline, leak or gas leakage can occur in piping failure
When, water flow and gas flow can be blocked in time, to avoid wasting more water resources and gas resource.
Compared with prior art, the present invention haing the following advantages and advantageous effect：
（1）The present invention is amplified by preamplifier using two level, sensor probe is collected fainter leakage signal
It is amplified, obtains more accurate suitable acquisition signal and enhance the sensitive monitoring of monitoring device convenient for coordinating with sensor
Degree.
（2）The present invention by the design to filter come suppression circuit noise, by the way that sound insulation is arranged outside sensor probe
Shell inhibits environment noise, to prevent acquisition signal disturbed, further increases detection accuracy.
（3）The present invention, can not only by the way that in each node setting node monitoring device, water pipe subregion is monitored
When water leakage situation occurs, judge outlet pipe breakage region in time, and replace, reparation get up it is simpler, conveniently.
（4）The vibration that the present invention detects pipe leakage by using piezoelectric acceleration sensor and generates judges piping failure
Situation, not only accuracy of detection is high, but also can equally be detected using identical principle and to be flowed in special conveying gas pipeline
Gas leakage situation realizes the multiple use of a device.
（5）The present invention not only eliminates by system full-automation and asks professional testing staff to detect whether leak, but also
Detection is rapid, accurate, avoids human error, while eliminating the process of periodic detection, largely save manpower, when
Between cost.
Description of the drawings
Fig. 1 is the whole functional block diagram of the present invention.
Fig. 2 is the structural schematic diagram of the node monitoring device of the present invention.
Fig. 3 is the circuit diagram of filter of the present invention.
Wherein：1, retaining collar；2, LED red indicating lights；3, transmitting antenna；4, signal projector；5, sensor probe；
6, plastic cement pipeline；7, screw.
Specific implementation mode
Embodiment 1：
A kind of long distance wireless routine for pipe-line transportation system leakage or gas leakage of the present embodiment, as shown in Figure 1：Packet
Include node monitoring device, signal receiver, controller, host computer.
The node monitoring device is set on plastic cement pipeline 6, including retaining collar 1, is connected as one with retaining collar 1
Signal picker；The monolithic that the signal picker includes piezoelectric acceleration sensor, is connect with piezoelectric acceleration sensor
Machine and the signal projector 4 being electrically connected respectively with microcontroller, indicating module, power module.
The signal receiver is realized with the signal projector 4 in node monitoring device and is wirelessly communicated, and is monitored and is filled to node
It sets collected monitoring information and carries out wireless receiving.
The controller is electrically connected with signal receiver, for receiving and processing monitoring information.
The host computer is communicatively coupled with controller by data line or wireless communication module, for acquisition
Frequency, amplitude data carry out image forming, in order to analyze water leakage situation and leak source position.
Its working principle is that：The node monitoring device is used to carry out the plastic cement pipeline 6 of the node signal of acoustical vibration
Acquisition, such a node monitoring device is multiple, and is equidistantly distributed on the plastic cement pipeline 6 for needing to monitor.Per adjacent
Two node monitoring devices form one group of complete leak positioning system, and the vibration generated by leak source is transferred to the two nodes
The different distance of monitoring device and the specific location for analyzing leak source.
Certain processing carries out data by the microcontroller of itself after node monitoring device collects information, here
It is controlled using microcontroller, carries out multiple signal acquisition, then by the signal processing of microcontroller, in multiple signal acquisition
In, to mcu programming, each output signal is compared, is only repeatedly measuring and is showing that the same bearing data is compared
Compared with, and certain abnormal measurement result is vetoed, it can reach repeatedly measure exclusion accidental error to reduce error influence in this way.
Then this data is wirelessly transferred by signal projector 4.
It is that signal receiver receives signal, and the monitoring that controller receives signal receiver is handled again
Analysis, on the one hand the data by processing analysis are stored in the memory that controller itself integrates is preserved；On the one hand
It is connected to host computer by data line, carries out the display of data, analyzes the molding of image and the statistics of data；Another party
Data processing is generated control instruction to start the follow-up required control device driven by face.
Embodiment 2：
The present embodiment advanced optimizes on the basis of embodiment 1, and the piezoelectric acceleration sensor is mainly visited by sensor
First 5, pre-amplification circuit, filter, gain amplifying circuit and signaling conversion circuit are constituted, and sensor probe 5, preceding storing
Big circuit, filter, gain amplifying circuit, signaling conversion circuit are sequentially connected.
The pre-amplification circuit is second amplifying circuit, and wherein input stage is field-effect tube, level-one is operational amplifier,
It is monopole type device that input stage, which uses technotron 2SK30A, field-effect tube, and noise is relatively low, and amplifier input impedance can
Up to tens of million, convenient for coordinating with sensor, pre-amplification circuit is amplified using two level, is improved the gain of preamplifier, is made
The sensitivity of amplifier further increases.
The operation principle of this sensor is：It is carried out at the same time signal acquisition by two piezoelectric acceleration sensor detecting heads, because
For due to pipeline distance etc., the vibration signal that sensor heads are acquired is very faint, here, first collects
Signal by pre-amplification circuit carry out first step amplification, in order to preferably coordinate sensor carry out signal acquisition, then
Signal filtering is carried out by filter, to eliminate jamming incoherent signal.Then acquisition signal is carried out second by gain amplifying circuit
Step amplification, this time amplifies to enable subsequent component to normally receive.Then by signaling conversion circuit acquisition
Signal carries out analog-to-digital conversion, is converted into the signal that follow-up microcontroller can identify.
By the rational design of this signal conditioning circuit, it can not only lower circuit power consumption, but also be directed to Monitoring Pinpelines,
Enhance detection sensitivity, inhibits interference signal, further increase accuracy in detection.
The other parts of the present embodiment are same as Example 1, and so it will not be repeated.
Embodiment 3：
The present embodiment advanced optimizes on the basis of embodiment 2, as shown in Figure 3：The filter is mainly by bandpass filtering
The amplifying circuit of circuit and in-phase proportion forms, and bandwidth-limited circuit connected with high-pass filtering circuit by low-pass filter circuit and
At.Using voltage-controlled power supply type bandpass filter, have the characteristics that not having to inductance, small, light-weight, can only be put with an operation
Big device is made of, wherein in figure to reduce power consumption and noise the amplifying circuit of two section RC filter circuits and in-phase proportion
R1 and C1 forms low-pass network, and C2 and R3 form high pass network, and the two series connection just constitutes bandwidth-limited circuit.Wherein when R3=
When 2R1=2R2, C2=C1=C3, i.e., ∞=1/ (RC) is both the center angular frequency of characteristic angular frequency and bandwidth-limited circuit, is had
Maximum voltage gain, here it is the passband voltage gains of bandwidth-limited circuit, and Q values are higher, and passband is narrower.Feature is input impedance
Height, output impedance is low to realize the gain of passband voltage, to obtain accurate signal.
Embodiment 4：
The present embodiment advanced optimizes on the basis of embodiment 3, as shown in Figure 2：The retaining collar 1 is split ring and opens
The protrusion for being inserted into screw 7 is provided at mouthful.It, can be according to the difference of plastic cement pipeline 6 by the way that the flexibility of split ring is arranged
Outer diameter adjust the internal diameter of retaining collar 1, to make retaining collar 1 be bonded fixation completely with plastic cement pipeline 6, node is avoided to examine
It surveys device to move on pipeline and change monitoring distance, and sensor can preferably acquire vibration signal.
It is additionally provided with sound proofing enclosure outside the sensor probe 5.By the way that sound proofing enclosure is arranged, barrier sensor probe 5 is received
To the noise jamming of external environment, to improve monitoring accuracy.
The power module is Portable secondary battery, can be that nickel-cadmium cell, Ni-MH battery, lithium ion battery and lithium are poly-
The recyclable charge-discharge batteries such as object battery are closed, not only compact is easily installed, but also energy conservation and environmental protection, cost are relatively low.
The indicating module is LED red indicating lights 2, is used for when leak occurs for plastic cement pipeline 6 in leak segment
Leakage instruction is carried out at node, to prompt the position for the treatment of people leakage point, to facilitate treatment people maintenance to handle.
Further include the solenoid valve being connected with plastic cement pipeline 6, and solenoid valve is electrically connected with controller.By in plastic pipe
Solenoid valve is set between road 6, water flow can be in time blocked when leak occurs for piping failure, to avoid wasting
More water resources.
Its 6 water leakage monitoring device of plastic cement pipeline combine the above improvement after operation principle be：Node monitoring device is real-time
Plastic conduit is detected, each two adjacent node monitoring device monitors 6 water leakage situation of one end plastic cement pipeline between them.
Sensor probe 5 in two node monitoring devices is bonded with 6 outer wall of plastic cement pipeline, detects the vibration generated by leak source, inspection
The vibration signal measured is input to by signal conditioning circuit in microcontroller, and microcontroller carries out it repeatedly relatively to handle, and obtains
Stable and accurate signal is simultaneously transferred to signal projector 4, this signal is wirelessly sent to signal receiver by signal projector 4 again,
Here because to enhance signal is provided with transmitting antenna 3 on signal projector 4.
Signal receiver receives signal, and the monitoring that controller receives signal receiver carries out processing point
Analysis, on the one hand the data by processing analysis are stored in the memory that controller itself integrates is preserved；On the one hand logical
It crosses data line and is connected to host computer, carry out the display of data, analyze the molding of image and the statistics of data；On the other hand
Data processing is generated control instruction and comes enabling signal indicator light and solenoid valve, signal lamp is used to refer to treatment people leak source
Region, solenoid valve is then opened in the case where detecting water leakage situation by controller, to block water flow, prevents the wave of water resource
Take.
Embodiment 5：
It in the present embodiment can be automatic according to a kind of long distance wireless for pipe-line transportation system leakage or gas leakage of embodiment 4
The operation principle to water leakage monitoring of monitor, and it is equally used the leak detection to gas in conveyance conduit.Its is right
The operation principle of Leakage inspection is：Node monitoring device is in real time detected plastic conduit, each two adjacent node prison
Survey one end plastic cement pipeline 6 gas leakage situation of the device monitoring between them.Sensor probe 5 in two node monitoring devices and modeling
6 outer wall of plastic pipe is bonded, and detects the vibration generated by leak source, and the vibration signal detected is input to by signal conditioning circuit
In microcontroller, microcontroller carries out it repeatedly relatively to handle, and obtains stable and accurate signal and is transferred to signal projector 4, believes
This signal is wirelessly sent to signal receiver by number transmitter 4 again, is arranged on signal projector 4 because to enhance signal here
Transmitting antenna 3.
Signal receiver receives signal, and the monitoring that controller receives signal receiver carries out processing point
Analysis, on the one hand the data by processing analysis are stored in the memory that controller itself integrates is preserved；On the one hand logical
It crosses data line and is connected to host computer, carry out the display of data, analyze the molding of image and the statistics of data；On the other hand
Data processing is generated control instruction and comes enabling signal indicator light and solenoid valve, signal lamp is used to refer to treatment people leak source
Region, solenoid valve are then detecting that gas leakage opened by controller, to block gas flow, are preventing gas resource
Waste and cause safety accident because of the leakage of fuel gas.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
According to the technical spirit of the present invention to any simple modification, equivalent variations made by above example, the protection of the present invention is each fallen within
Within the scope of.
Claims (9)
1. a kind of long distance wireless routine for pipe-line transportation system leakage or gas leakage, it is characterised in that：Including suit
In plastic cement pipeline（6）On node monitoring device, with node monitoring device communication connection signal receiver and signal receiver
The controller of connection, the host computer with controller communication connection；The node monitoring device includes retaining collar（1）And it is fixed
Lantern ring（1）The signal picker being connected as one；The signal picker includes piezoelectric acceleration sensor and piezoelectric acceleration
The microcontroller of sensor connection, the signal projector being electrically connected respectively with microcontroller（4）, indicating module, power module.
2. a kind of long distance wireless routine for pipe-line transportation system leakage or gas leakage according to claim 1,
It is characterized in that：The piezoelectric acceleration sensor is mainly by sensor probe（5）, pre-amplification circuit, filter, gain put
Big circuit and signaling conversion circuit are constituted, and sensor probe（5）, pre-amplification circuit, filter, gain amplifying circuit,
Signaling conversion circuit is sequentially connected.
3. a kind of long distance wireless routine for pipe-line transportation system leakage or gas leakage according to claim 2,
It is characterized in that：The pre-amplification circuit is second amplifying circuit, and wherein input stage is field-effect tube, level-one is operation amplifier
Device.
4. a kind of long distance wireless routine for pipe-line transportation system leakage or gas leakage according to claim 2,
It is characterized in that：The filter is formed by connecting by the amplifying circuit of bandwidth-limited circuit and in-phase proportion, and bandpass filtering electricity
Routing low-pass filter circuit is connected in series with high-pass filtering circuit.
5. a kind of long distance wireless routine for pipe-line transportation system leakage or gas leakage according to claim 2,
It is characterized in that：The sensor probe（5）It is additionally provided with sound proofing enclosure outside.
6. a kind of long distance wireless routine for pipe-line transportation system leakage or gas leakage according to claim 1,
It is characterized in that：The retaining collar（1）It is provided with for split ring and opening for being inserted into screw（7）Protrusion.
7. a kind of long distance wireless routine for pipe-line transportation system leakage or gas leakage according to claim 1,
It is characterized in that：The power module is Portable secondary battery.
8. a kind of long distance wireless routine for pipe-line transportation system leakage or gas leakage according to claim 1,
It is characterized in that：The indicating module is LED red indicating lights（2）.
9. automatic according to a kind of long distance wireless for pipe-line transportation system leakage or gas leakage of claim 1-8 any one of them
Monitor, it is characterised in that：Further include and plastic cement pipeline（6）The solenoid valve being connected, and solenoid valve is electrically connected with controller.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944225A (en) * | 2021-01-29 | 2021-06-11 | 湖南元想科技有限公司 | Online leakage-detecting water supply pipeline system and online leakage monitoring method |
| CN113236980A (en) * | 2021-04-23 | 2021-08-10 | 南京信息职业技术学院 | Water leakage protector and control method thereof |
| CN113432046A (en) * | 2021-08-02 | 2021-09-24 | 江苏锦源型材科技有限公司 | Plastic pipe water leakage detection method |
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